1. Developments in direct thermochemical liquefaction of biomass: 1983–1990;Elliott;Energy Fuels,1991
2. Progess on research of upgrading of bio-oil;Xu;Modern Chemical Industry,2007
3. Study on upgrading of bio-oil catalyzed over solid acids;Zhang;Journal of Fuel Chemistry and Technology,2006
4. Upgrading of bio-oil by esterification over solid base catalyst[J];Xu;Petrochemical Technology,2006
5. Catalytic cracking of bio-oil from biomass pyrolysis;Guo;The Chinese Journal of Process Engineering,2003